Small-leaf Bitter Tea is a common type of tea, as a tea, it does not have some equivalent to the role of drugs to treat diseases, but reasonable drinking has the role of increasing the body’s water needs. It also contains some substances needed by the human body, such as vitamins, minerals, etc., to help increase the relevant nutrition. Modern nutritional studies have shown that small-leaf bitter tea contains relatively high levels of zinc and selenium, which helps to replenish the body with these substances when consumed in a reasonable manner. The tea also contains a small amount of vitamins, which are beneficial to maintaining the normal functioning of the body’s physiology. However, small-leaf bittersweet tea also contains caffeine and other ingredients, so do not drink too much strong tea, so as not to affect sleep.